Simple Harmonic Motion: An object oscillates such that its position x as a function of time t obeys the equation x = (0.222 m) sin(314 s-1 t), where t is in seconds.(a) In one period, what total distance does the object move?(b) What is the frequency of the motion?(c) What is the position of the object when t = 1.00 s?
What will be an ideal response?
(a) 0.888 m (b) 50.0 Hz (c) -0.0352 m
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A trapeze artist, with swing, weighs 700 N; he is being held to one side by his partner so that the swing ropes make an angle of 40.0° with the vertical. In such a condition of static equilibrium, what is the tension in the rope?
a. 9.1E+2 N b. 5.4E+2 N c. 700 N d. 1.4E+3 N e. 9.6E+2 N
Think of Bernoulli's equation as it pertains to an ideal fluid flowing through a horizontal pipe. Imagine that you take measurements along the pipe in the direction of fluid flow. What happens to the sum of the pressure and energy per unit volume?
a. It increases as the pipe diameter increases. b. It decreases as the pipe diameter increases. c. It remains constant as the pipe diameter increases. d. No choices above are valid.
What causes precession?
What will be an ideal response?
Scientists cannot agree on whether viruses are living or not because
A) they are much smaller than other simple living organisms B) they can reproduce but do not require any utilization of energy to do so C) they can only reproduce within a host cell and not independently D) under certain conditions they can reproduce, but they do not contain any DNA